Davis, who seconded Obama’s nomination at the 2008 Democratic Convention, switched parties this past May and said he was considering a comeback bid in Virginia, which is now his home.

The former four-term Alabama Democrat will be working the Romney campaign in Arlington, Va. He'll be meeting with GOP Victory Chairman Pete Snyder and an unnamed local business owner. He has previously campaigned for Romney in the state.

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Davis was the only African-American Democratic House member to vote against Obama's healthcare law. He has grown increasingly vocal over his disagreements with his party, at one point lamenting on his website that “[the Democratic Party of today] is not Bill ClintonWilliam (Bill) Jefferson ClintonMueller’s probe doesn't end with a bang, but with a whimper Mark Mellman: History’s judgment Congress should massively ramp up funding for the NIH MORE’s Democratic Party.”